Thanks for your prompt reply to my question.
The layout on the back of the notebook is not as the photos above.
The owners guide says that the memory is in the back and the cover for this has four screws.
I have removed these and the cover section stays solid.
As it is a very new Notebook, I do not wish to damage the unit in anyway of course.
You will gather that I have not dealt with Notebooks before, very new to me.
Thanks for any further help.